Here’s your problem, you’re stuck in a heliocentric model and are mixing apples and oranges.
Flat earth is not about the planet earth being flat in what you would call universe.
It’s about earth being a realm, not just a spec in a vast universe, there is no vast universe. Space ain’t real. Gravity ain’t real, dawg!
Earth is all there is, a flat, non-moving realm in the middle of the waters (waters above, waters below), with lights circling above.
Heliocentric model is just a story that has been told to you, you can’t confirm any parts of it.
You see lights circling above, one of those lights being 93 million miles away is just a part of the heliocentric story, not a scientifically proven fact.
You need to understand the model as a whole to understand why it’s not ridiculous at all … as long as you consider philosophical and mathematical spins of a theory a “fact”, you will never be able to even entertain flat earth.
From a recent news article, apparently they are going to sail to the 200 foot tall Ice Wall that surrounds the edge of our flat earth:
Organizers of an annual conference that brings together people who believe that the Earth is flat are planning a cruise to the purported edge of the planet. They’re looking for the ice wall that holds back the oceans.
The journey will take place in 2020, the Flat Earth International Conference (FEIC) recently announced on its website. The goal? To test so-called flat-Earthers’ assertion that Earth is a flattened disk surrounded at its edge by a towering wall of ice.